[Freesurfer] Creating Brainmaps for Significant Regression

Hi all,

So far I have only been using Freesurfer analyses to look at the functional activation for individuals, single groups, and subtractions between 2 groups. We now want to investigate a possible linear relationship between allele load (Three levels: 0,1,2) and functional activation. Is there a way to create a brainmap using glmfit or some other command that displays voxels that display a significant regression of genotype (such as red for positive / blue for negative linear relationship)? Basically, it would be a map that shows significant "r" instead of significant difference.

Thanks,

Adam Nitenson, B.S. Brain Genomics Lab Massachusetts General Hospital